The Superhero in the Alley - S1-E12
Continuity mistake: When Bones is shading on the piece of paper at the start, it goes from wide light shading to narrow and dark. (00:06:30)
The Superhero in the Alley - S1-E12
Continuity mistake: Near the end, when Lucy first looks at the comic book, the page across from the "thank you" page is different than when it is shown a few shots later.
Answer: Since the palatine bone is a bone that helps form the mouth it has a lot to do with speaking. The shape of it differs a lot depending on your ethnic background. I would guess that they, in the show, meant that the person's bone tells that they were Japanese and that it was "made for the purpose of speaking Japanese." That's what I'd assume anyway. I've studied molecular biology though, so I'm not an expert on bones.